MWL_RXDESC
static int mwl_rxdesc = MWL_RXDESC; /* # rx desc's to allocate */
if (bootverbose || mwl_rxdesc != MWL_RXDESC)
#ifndef MWL_RXDESC
#define MWL_RXBUF ((5*MWL_RXDESC)/2)/* number of RX dma buffers */